Natrolite and Blue John Physical Properties

Natrolite and Blue John Chemical Formula

While comparing Natrolite and Blue John physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Natrolite and Blue John chemical formula.

• Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Natrolite and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Natrolite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Natrolite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Natrolite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.